QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Ogden, UT

USGS: 15 km ENE of Enterprise, Utah

53 km (33 mi) NNE of Salt Lake City, UT · 33 km (20 mi) E of Ogden, UT

1:32 am MST, Jan 3, 2016 · · 4.9 km deep · released about 17 lb of TNT

Every earthquake near Ogden Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Morgan County 9 kmWeber County 27 kmDavis County 54 kmRich County 58 kmSummit County 61 kmSalt Lake County 63 kmCache County 64 kmUinta County 86 kmWasatch County 100 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
1:32 am MST on 3 January 2016 ()
Where
33 km (21 mi) E of Ogden, UT · earthquakes near Ogden
Magnitude
M 1.8 (ml)
Depth
4.9 km below the surface
Felt
no reports yet
Nearest
Morgan County, 9 km S
Nearest mapped fault
Morgan fault, 10 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3924 days ago

A magnitude 1.8 earthquake was recorded 33 km (21 mi) E of Ogden, UT, at 1:32 am MST on 3 January 2016 (08:32 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Morgan, Mountain Green, Wolf Creek, Uintah, South Weber, Liberty.

How big was it?

This earthquake released about 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.5 26 km E of Avon, Utah · 37 km N of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 41.1713, -111.5817. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Morgan County, UT 9 km (6 mi) S earthquakes near Morgan County
Weber County, UT 27 km (17 mi) WNW earthquakes near Weber County
Davis County, UT 54 km (34 mi) WSW earthquakes near Davis County
Rich County, UT 58 km (36 mi) NNE earthquakes near Rich County
Summit County, UT 61 km (38 mi) ESE earthquakes near Summit County
Salt Lake County, UT 63 km (39 mi) SSW earthquakes near Salt Lake County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

55 earthquakes have been recorded within 50 km since this one.

  1. 2.4 21 km ENE of Echo, Utah
  2. 1.7 7 km E of Avon, Utah
  3. 1.7 6 km E of Avon, Utah
  4. 2.1 8 km SSW of Henefer, Utah
  5. 2.0 9 km SSW of Henefer, Utah
  6. 1.9 13 km SW of Echo, Utah
  7. 1.5 8 km ENE of Paradise, Utah
  8. 2.2 3 km E of Enterprise, Utah
  9. 1.8 5 km ESE of Morgan, Utah
  10. 1.6 5 km ESE of Morgan, Utah
  11. 1.6 5 km ESE of Morgan, Utah
  12. 1.6 21 km N of Henefer, Utah
  13. 2.2 8 km NE of Huntsville, Utah
  14. 2.7 22 km SSW of Woodruff, Utah
  15. 1.6 10 km W of Woodruff, Utah

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.